65-45-12 HRDS Ductile Dura-Bar Overview

Dura-Bar 4512 HRDS is a high silicon ductile iron intended for use at elevated temperatures or when a part is subjected to thermal cycling, such as permanent mold applications. The ferritic structure remains stable so that no significant transformation takes place minimizing stresses that lead to cracks and distortion of the finished part.

Microstructure

The microstructure consists of Type I & Type II nodular graphite as specified in ASTM A247. The matrix will be predominantly ferrite. Chill carbides are less than 5% in any field at 100x and are well dispersed.

Heat Treat Response

Dura-Bar 4512 HDRS is not intended for hardening. The matrix structure may be softened slightly by heating to 1400° F and furnace cooling to 400° F.

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Dura-Bar 100-70-03 can be oil quench hardened from 1600° F to a minimum hardness of Rockwell C 50 on the outside of the bar.
Dura-Bar 100-70-03 ductile iron contains nodular graphite in a matrix of pearlite with small amounts of ferrite.
The microstructure consists of Type I & Type II nodular graphite as defined in ASTM A247.

The ferritic structure gives excellent machinability with good surface finishes along with optimal impact strengths, fatigue properties, electrical conductivity and high magnetic permeability.
Dura-Bar 65-45-12 ductile iron contains nodular graphite in a matrix of ferrite with small amounts of pearlite.
Dura-Bar 65-45-12 can be oil quench hardened from 1600° F to Rockwell C 50 minimum on the outside of the bar.

The pearlite/ferrite structure provides higher wear resistance and strength when compared to a ferrite grade of ductile iron.
Dura-Bar 80-55-06 can be oil quench hardened from 1600° to a minimum hardness of Rockwell C 50 on the outside of the bar.
Dura-Bar 80-55-06 ductile iron will contain nodular graphite in a matrix of ferrite and pearlite.

Dura-Bar's distributors are handpicked to make sure they have the commitment and knowledge needed to support the needs of the Dura-Bar customer.
Many products are stocked in semi-machined condition, providing a near-net shaped part and saving the customer valuable machine time.
We have many ways to meet any processing needs and are always looking for new opportunities to partner with our customers.